By Paula Margulies As a publicist, I'm sent books of all genres by authors interested in my services, but lately I seem to be on the receiving end of a lot of memoirs. I've also spoken to a higher-than-usual number of memoir writers, who either telephone or approach me with questions at writer's conferences. The bulk of these conversations have to do with why their memoirs aren’t selling and what the authors can do to make them better. My first suggestion for all memoir writers is to take a look at their market and identify the different types of people who would want to read their book. This is tricky, for while many memoir writers have done a good job of detailing certain aspects of their personal history, a number of them have not thought about who might be interested in reading what they've written. A lot of memoirs I've seen recently are nothing more than personal recountings of an individual’s experiences – some of which are, indeed, memorable. But I...